CN108947460B - Artificial ore plate and preparation method thereof, and composite floor and preparation method thereof - Google Patents

Artificial ore plate and preparation method thereof, and composite floor and preparation method thereof Download PDF

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Publication number
CN108947460B
CN108947460B CN201810915004.0A CN201810915004A CN108947460B CN 108947460 B CN108947460 B CN 108947460B CN 201810915004 A CN201810915004 A CN 201810915004A CN 108947460 B CN108947460 B CN 108947460B
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China
Prior art keywords
ore
composite floor
artificial
sodium
plate
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CN108947460A (en
Inventor
方庆华
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Zhejiang Tianzhen Technology Co Ltd
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Zhejiang Tianzhen Technology Co Ltd
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Priority to CN201810915004.0A priority Critical patent/CN108947460B/en
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Priority to US16/245,688 priority patent/US20200047469A1/en
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Abstract

The invention belongs to the technical field of plates, and particularly relates to an artificial ore plate and a preparation method thereof, and a composite floor and a preparation method thereof. The artificial ore plate provided by the invention comprises modified ore layers and glass fiber gridding cloth layers which are alternately laminated; the bottom layer and the surface layer of the artificial ore plate are modified ore layers. The composite floor prepared by the artificial ore plate is kept stand for 6 hours at the temperature of 80 ℃ and then cooled for 6 hours, the length change rate of the composite floor before and after heating is 0.02-0.10% of shrinkage, and the warping degree is 0.225-0.413 mm; after the composite floor is soaked in water for 24 hours, the length of the composite floor is expanded by 0.02-0.05%, the thickness of the composite floor is expanded by 1.33-1.57%, and the warping degree is 0.2625-0.425 mm.

Description

Artificial ore plate and preparation method thereof, and composite floor and preparation method thereof
Technical Field
The invention belongs to the technical field of plates, and particularly relates to an artificial ore plate and a preparation method thereof, and a composite floor and a preparation method thereof.
Background
With the continuous development of society, people have higher and higher requirements on home decoration materials. Natural stone is used as a floor material, and the natural stone is gradually replaced by a wooden floor because the stone has heavy weight and brings inconvenience to processing and paving. The wooden floor is light in texture and convenient to transport, process and pave, but the wood is easy to deform under the humid or high-temperature condition, so that the attractiveness and the practicability of the wooden floor are influenced, and the application range of the wooden floor is limited.
Disclosure of Invention
The invention aims to provide an artificial ore plate and a preparation method thereof, and a composite floor and a preparation method thereof.
In order to achieve the above purpose, the invention provides the following technical scheme:
an artificial ore plate comprises modified ore layers and glass fiber gridding cloth layers which are alternately laminated; the bottom layer and the surface layer of the artificial ore plate are modified ore layers;
the raw materials for forming the modified ore layer comprise the following components in parts by mass: 60-80 parts of ore base material, 20-24 parts of sawdust, 3-5 parts of modifier and 20-25 parts of water; the ore base includes magnesium oxide and magnesium chloride.
Preferably, the modifier comprises sodium methylene dinaphthalene sulfonate, ferrous sulfate, oxalic acid, trisodium phosphate, sodium methyl nitrate, dibutyl phthalate, phenol, xylene, toluene, ethylenediamine, sulfuric acid, sodium hexametaphosphate, sodium nitrite, methyl cellulose, formaldehyde, xerophthalein, gelatin, sodium pentachlorophenate, sodium fluosilicate, water glass and water.
Preferably, the wood chips comprise straw chips.
Preferably, the total thickness of the artificial ore plate is 1-10 mm.
The invention also provides a preparation method of the artificial ore plate in the technical scheme, which comprises the following steps:
(1) mixing the raw materials of the modified ore layer, and carrying out modification reaction to obtain modified ore slurry;
(2) laying the modified ore slurry obtained in the step (1) and the glass fiber mesh cloth in a mould in an alternating layer mode, and then sequentially carrying out curing and demoulding to obtain an artificial ore plate blank comprising a modified ore layer and a glass fiber mesh cloth layer; the bottom layer and the surface layer of the artificial ore plate primary blank are modified ore layers;
(3) and (3) sequentially maintaining and sanding the artificial ore plate primary blank obtained in the step (2) to obtain the artificial ore plate.
The invention also provides a composite floor, which sequentially comprises the wear-resistant layer, the artificial ore plate and the back pad which are laminated and bonded, wherein the artificial ore plate is the artificial ore plate in the technical scheme or the artificial ore plate prepared by the preparation method in the technical scheme.
Preferably, the thickness of the composite floor is 2-12 mm.
Preferably, two opposite side ends of the composite floor are respectively provided with a flange and a groove capable of being buckled with the flange
The invention provides a preparation method of the composite floor board in the technical scheme, which comprises the following steps:
(a) the wear-resistant paper is stuck on the surface layer of the artificial ore stone slab, the balance paper is stuck on the bottom layer of the artificial ore stone slab, and a semi-finished product of the composite floor is obtained after hot pressing;
(b) and (b) sticking a back cushion on one side of the balance paper of the semi-finished product of the composite floor obtained in the step (a), and then carrying out cold pressing to obtain the composite floor.
Preferably, the temperature of the hot pressing in the step (a) is 100-190 ℃; the hot pressing pressure is 2-15 MPa; the hot pressing time is 0.5-30 min.
The artificial ore plate provided by the invention comprises modified ore layers and glass fiber gridding cloth layers which are alternately laminated; the bottom layer and the surface layer of the artificial ore plate are modified ore layers; the raw materials for forming the modified ore layer comprise the following components in parts by mass: 60-80 parts of ore base material, 20-24 parts of sawdust, 3-5 parts of modifier and 20-25 parts of water; the ore base includes magnesium oxide and magnesium chloride. In the invention, the modifier can modify the ore base material, improve the stability of the ore base material and provide a foundation for obtaining the artificial ore plate with better high temperature resistance and water erosion resistance; the invention uses the wood chips to replace partial ore base materials, and can reduce the dead weight of the artificial ore plate on the basis of not influencing the waterproof and permeability performance of the artificial plate. The embodiment result shows that the composite floor prepared by the artificial ore plate in the technical scheme is kept stand for 6 hours at the temperature of 80 ℃ and then cooled for 6 hours, the length change rate of the composite floor before and after heating is 0.02-0.10% of shrinkage, and the warping degree is 0.225-0.413 mm; after the composite floor is soaked in water for 24 hours, the length of the composite floor is expanded by 0.02-0.05%, the thickness of the composite floor is expanded by 1.30-1.60%, and the warping degree is 0.2625-0.425 mm.
Drawings
FIG. 1 is a schematic view showing the structure of an artificial ore plate obtained in example 1;
FIG. 2 is a schematic structural view of a composite floor obtained in example 1;
FIG. 3-1 is a schematic structural view of the composite floor obtained according to the present invention;
FIG. 3-2 is a schematic view of a fastening structure of the composite floor board according to the present invention;
fig. 4 is a smoke density graph of the composite floor obtained in example 1.
Detailed Description
The invention provides an artificial ore plate, which comprises modified ore layers and glass fiber gridding cloth layers which are alternately laminated; the bottom layer and the surface layer of the artificial ore plate are modified ore layers;
the raw materials for forming the modified ore layer comprise the following components in parts by mass: 60-80 parts of ore base material, 20-24 parts of sawdust, 3-5 parts of modifier and 20-25 parts of water; the ore base includes magnesium oxide and magnesium chloride.
As shown in fig. 1, the artificial ore plate provided by the invention comprises modified ore layers 1 and glass fiber mesh cloth layers 2 which are alternately laminated; the bottom layer and the surface layer of the artificial ore plate are respectively a modified ore layer 1-1 and a modified ore layer 1-2.
In the invention, the raw materials for forming the modified ore layer comprise the following components in parts by mass: 60-80 parts of ore base material, 20-24 parts of sawdust, 3-5 parts of modifier and 20-25 parts of water.
The raw materials of the modified ore layer comprise 60-80 parts of ore base material, preferably 65-78 parts, and more preferably 68-75 parts. In the present invention, the ore base includes magnesium oxide and magnesium chloride; the mass ratio of the magnesium oxide to the magnesium chloride is preferably (30-40) to (15-25), and more preferably (32-37): (18-23). The source of the magnesium oxide and magnesium chloride is not particularly required in the present invention, and commercially available products well known to those skilled in the art may be used.
The raw materials of the modified ore layer comprise 20-24 parts of wood chips, specifically 20 parts, 21 parts, 22 parts and 23 parts by mass of the ore base material. In the present invention, the wood chips preferably include straw chips. The particle size of the wood chips does not have any special requirement, and the particle size well known to a person skilled in the art can be adopted. The invention takes the wood chips as the raw material, utilizes the flexible plant fiber contained in the wood chips to improve the toughness of the artificial ore stone plate and reduce the density of the artificial ore stone plate; in addition, the wood chips are used as raw materials to prepare the artificial ore plate, so that the utilization rate of the wood chips can be improved, and the pollution of wood chip incineration to the environment is reduced.
The raw materials of the modified ore layer comprise 3-5 parts of a modifier, preferably 3.5-4.5 parts by mass based on the mass parts of the ore base material. In the present invention, the modifier preferably includes sodium methine dinaphthalene sulfonate, ferrous sulfate, oxalic acid, trisodium phosphate, sodium methyl nitrate, dibutyl phthalate, phenol, xylene, toluene, ethylenediamine, sulfuric acid, sodium hexametaphosphate, sodium nitrite, methyl cellulose, formaldehyde, xerophthalein, gelatin, sodium pentachlorophenolate, sodium fluorosilicate, water glass, and water.
In the present invention, the modifier preferably includes, in mass percent: 2-2.5% of sodium methylene dinaphthalene sulfonate, 9-12% of ferrous sulfate, 12-15% of oxalic acid, 0.5-0.8% of trisodium phosphate, 0.5-1.0% of sodium methyl nitrate, 0.3-0.5% of dibutyl phthalate, 0.7-1.0% of phenol, 0.6-1.0% of xylene, 0.6-1.0% of toluene, 0.5-0.7% of ethylenediamine, 5-8% of sulfuric acid, 1.0-1.2% of sodium hexametaphosphate, 0.5-0.7% of sodium nitrite, 1.8-2.5% of methyl cellulose, 0.8-1.5% of formaldehyde, 0.8-1.5% of dry cellulose, 7-8% of gelatin, 0.01-0.05% of sodium pentachlorophenate, 0.01-0.5% of sodium fluosilicate, 0.5-1.0% of water glass and the balance of water, more preferably 2% of sodium methylene dinaphthalene sulfonate, 10% of ferrous sulfate, 13% of trisodium phosphate, 0.6% of sodium methyl phosphate, 0.8% of dibutyl phthalate, 0.8% of xylene, 0.8% of toluene diamine, 0.5% of xylene sulfate, 0.8% of toluene, 1.08 percent of sodium hexametaphosphate, 0.5 percent of sodium nitrite, 2 percent of methyl cellulose, 1 percent of formaldehyde, 1 percent of xerophthalein, 8 percent of gelatin, 0.02 percent of sodium pentachlorophenate, 0.2 percent of sodium fluosilicate, 0.6 percent of water glass and the balance of water.
In the invention, the sodium methylene dinaphthalene sulfonate can improve the dispersion performance of each component, and provides a foundation for obtaining artificial ore plates with uniform performance; the oxalic acid can inhibit the expansion performance of the modified ore layer under the action of trisodium phosphate; the sodium methyl nitrate can be hydrolyzed to generate methyl silicon, and the methyl silicon, the sodium fluosilicate and the water glass simultaneously act, so that the waterproof performance of the artificial ore stone plate is improved; the sodium hexametaphosphate and the methyl cellulose can improve the binding force between the ore base materials; the xerophthalein can be used for generating xerophthalein plastics with formaldehyde, so that the water resistance of the artificial ore plate is further improved. The present invention does not require the source of the components of the modifier, and commercial products well known to those skilled in the art can be used.
The modified ore layer comprises 20-25 parts of water, preferably 21-24 parts of water, based on the mass parts of the ore base material.
In the invention, the ore base material, the wood chips, the modifier and the water are cooperated to form a modified ore layer with stable strength and size performance. In the invention, the number of the modified ore layers is preferably not less than 2, and more preferably 2-5.
The artificial ore plate also comprises a glass fiber gridding cloth layer. The invention has no special requirement on the number of the layers of the glass fiber gridding cloth layers, and the glass fiber gridding cloth layers are matched with the number of the layers of the modified ore layers, so that the bottom layer and the surface layer of the artificial ore plate are the modified ore layers.
In the invention, the glass fiber mesh cloth is laid in a single layer. In the invention, the chemical composition of the glass fiber mesh fabric preferably comprises a metal oxide, and the mass content of the metal oxide is preferably 11-17%, and more preferably 11.9-16.4%; the glass fiber mesh cloth is provided with meshes, and the size of the meshes is preferably 5mm multiplied by 5mm or 4mm multiplied by 4 mm; the density of the glass fiber mesh cloth is preferably 80-165 g/m2More preferably 100 to 140g/m2(ii) a The tensile strength of the monofilaments in the glass fiber mesh cloth is preferably 1.57-3.43 GPa; more preferably 2 to 3 GPa. The invention preferably takes the glass fiber mesh cloth as a reinforcing material of the artificial ore stone plate and takes the fiber as a framework, thereby improving the load-carrying capacity of the artificial ore stone plate.
In the invention, the thickness of the artificial ore plate is preferably 1-10 mm, and more preferably 3-7 mm. The length and the width of the artificial ore plate are not specially required, the transverse length of the artificial ore plate for measuring the dimensional stability is preferably 3350-3360 mm, and the longitudinal length of the artificial ore plate is preferably 2400-2410 mm.
The invention preferably uses the rate of change as a measure of the dimensional stability of the synthetic ore board. In the present invention, the calculation method of the change rate is: percent change (%) (pre-test sample size parameter-post-test sample size parameter)/pre-test sample size parameter; when the change rate is positive, the shrinkage of the test sample size is indicated under the condition; negative values of the rate of change indicate swelling of the test specimen dimensions under these conditions. In the present invention, the dimensional parameters preferably include length, thickness, and warp; the lengths include a longitudinal length and a transverse length.
The artificial ore plate disclosed by the invention has excellent high-temperature resistance and waterproof performance. The artificial ore plate is placed for 24 hours at the temperature of 0 ℃, 25 ℃ and 40 ℃, and the length change rate of the artificial ore plate is calculated after measurement so as to characterize the thermal expansion performance of the artificial ore plate under the condition of alternating heat and cold. Under the condition of 0-25 ℃, the length change rate of the artificial ore stone plate is-0.04-0.05%; under the condition of 25-40 ℃, the length change rate of the artificial ore stone plate is-0.02 to-0.03 percent; the length change rate of the artificial ore stone plate is-0.06 to-0.08 percent under the condition of 0 to 40 ℃.
The artificial ore plate is kept stand at 80 ℃ for 6 hours to serve as a heating test condition so as to represent the size stability of the artificial ore plate. In the invention, the length change rate of the artificial ore plate after being heated is 0.04-0.09%, and the warping degree of the artificial ore plate after being heated is 0.045-0.083 mm.
The artificial stone plate is soaked in water for 24 hours to be used as a waterproof performance test condition so as to characterize the waterproof performance of the artificial stone plate. In the invention, the length change rate of the artificial ore plate after waterproof test is 0.03-0.06% of expansion; the thickness change rate of the artificial ore plate is 0.86-1.92% of expansion; the warping degree of the artificial ore plate is 0.65-1.075 mm.
The invention also provides a preparation method of the artificial ore plate in the technical scheme, which comprises the following steps:
(1) mixing the raw materials of the modified ore layer, and carrying out modification reaction to obtain modified ore slurry;
(2) laying the modified ore slurry obtained in the step (1) and the glass fiber mesh cloth in a mould in an alternating layer mode, and then sequentially carrying out curing and demoulding to obtain an artificial ore plate blank comprising a modified ore layer and a glass fiber mesh cloth layer; the bottom layer and the surface layer of the artificial ore plate primary blank are modified ore layers;
(3) and (3) sequentially maintaining and sanding the artificial ore plate primary blank obtained in the step (2) to obtain the artificial ore plate.
According to the invention, the raw materials of the modified ore layer are mixed and subjected to modification reaction to obtain the modified ore slurry. In the invention, magnesium oxide, magnesium chloride and water in the raw materials of the modified ore layer react under the action of a modifier to generate a ternary system magnesium gel material, so as to obtain modified ore slurry. In the invention, the chemical composition and the dosage of the raw materials of the modified ore layer are consistent with those of the raw materials of the modified ore layer in the technical scheme, and are not repeated here.
After the modified ore slurry is obtained, the modified ore slurry and the glass fiber mesh cloth are alternately layered, and then the artificial ore plate blank comprising the modified ore layer and the glass fiber mesh cloth layer is obtained through curing and demolding in sequence. In the invention, the alternate layers of the modified ore pulp and the glass fiber mesh cloth are laid in a mould. The present invention has no special requirements for the specific dimensions of the mold, and the mold known to those skilled in the art can be used.
In the invention, the alternate layer paving is to pave a layer of glass fiber mesh cloth on the surface layer of the modified ore slurry after paving the modified ore slurry; and after the glass fiber mesh cloth is paved, the modified ore slurry is paved on the surface layer of the glass fiber mesh cloth. The invention has no special requirements on the layer laying times of the modified ore pulp and the glass fiber mesh cloth, and can form a primary blank with the structure composition consistent with that of the artificial ore plate in the technical scheme.
The invention has no special requirement on the layer thickness of the modified ore slurry and can be set according to actual requirements. In the embodiment of the invention, the layer thickness of the modified ore slurry is preferably 1.5-4 mm, and more preferably 2-3 mm. The invention has no special requirement on the layer paving mode of the modified ore slurry, and the layer paving mode which is well known by the technical personnel in the field can be adopted.
In the invention, when the number of the modified ore pulp layers is multiple, the layer thicknesses of the modified ore pulp of different layers can be the same or different.
The invention has no special requirement on the layer laying mode of the glass fiber mesh cloth, and the glass fiber mesh cloth can be laid on the upper surface of the modified ore slurry smoothly.
The number of the layer laying layers of the modified ore slurry and the number of the layer laying layers of the glass fiber gridding cloth are consistent with the number of the layer laying layers of the modified ore layer and the glass fiber gridding cloth layer in the technical scheme, and the number of the layer laying layers is not repeated.
After the alternate layers are paved, the slurry paved in the die in the alternate layers is sequentially cured and demoulded to obtain the artificial ore plate blank comprising the modified ore layer and the glass fiber gridding cloth layer. In the invention, the curing mode is standing, and the standing time is preferably 8-72 hours, and more preferably 12-24 hours; the temperature of the curing is preferably room temperature. After solidification, the invention demolds the solidified body obtained by solidification to obtain an artificial ore plate blank. The present invention does not require special embodiments of the demolding, as such may be accomplished in a manner well known to those skilled in the art.
After the artificial ore plate primary blank is obtained, the artificial ore plate primary blank is sequentially maintained and sanded to obtain the artificial ore plate. In the present invention, the curing is preferably performed at room temperature, and the time for the curing is preferably 6 to 14 days, and more preferably 7 to 10 days. After curing, the invention sandes the cured material to ensure that the surface of the plate is flat and uniform in thickness, and a more regular artificial ore plate is obtained. The invention has no special requirements for the specific implementation mode of sanding, and the method is well known by the technical personnel in the field.
In the invention, the performance of the artificial ore plate prepared by the preparation method of the technical scheme is consistent with that of the artificial ore plate of the technical scheme, and the performance is not repeated here.
As shown in fig. 2, the present invention further provides a composite floor, which sequentially comprises a wear-resistant layer B, an artificial ore plate a and a back pad C, wherein the wear-resistant layer B, the artificial ore plate a and the back pad C are stacked and bonded, the wear-resistant layer B and the back pad C are respectively bonded to the bottom layer and the surface layer of the artificial ore plate a, and the artificial ore plate is the artificial ore plate according to the above technical scheme or the artificial ore plate prepared by the preparation method according to the above technical scheme.
The composite floor provided by the invention comprises an artificial ore plate. In the present invention, the artificial ore plate is identical to the artificial ore plate according to the above technical scheme or the artificial ore plate prepared by the preparation method according to the above technical scheme, and is not repeated here.
The composite floor provided by the invention also comprises a wear-resistant layer and a back cushion which are respectively stuck to the bottom layer and the surface layer of the artificial ore plate.
In the invention, the components of the wear-resistant layer comprise aluminum oxide and melamine resin. The invention has no special requirement on the mass ratio of the aluminum oxide to the melamine resin, and can be prepared by adopting the mixture ratio well known by the technical personnel in the field. In the invention, the wear-resistant layer is preferably adhered to one surface of the artificial ore plate through an adhesive; the adhesive preferably comprises a polyurethane adhesive and/or a melamine formaldehyde resin adhesive; more preferably a melamine formaldehyde resin adhesive. When the resin adhesive is a mixture of two components, the invention has no special requirement on the dosage ratio of each component in the mixture. The invention has no special requirements on the sources of the polyurethane adhesive and the melamine formic acid resin adhesive, and can adopt commercial products well known to those skilled in the art. The invention has no special requirement on the dosage of the adhesive, so that the wear-resistant layer can be adhered to the artificial ore plate.
The chemical composition of the back pad is not particularly required in the present invention and may be any known to those skilled in the art. In the invention, the adhesive between the back cushion and the artificial ore plate is preferably in accordance with the selection range of the adhesive for adhering the wear-resistant layer in the technical scheme, and is not repeated here. The invention has no special requirement on the dosage of the adhesive, so that the back pad can be pasted on the artificial ore plate.
According to the invention, the wear-resistant layer and the back pad are adhered to the bottom layer and the surface layer of the artificial mineral stone plate, the wear-resistant layer is utilized to improve the wear resistance of the composite floor, and the back pad is utilized to absorb sound and reduce noise, so that the foot feeling comfort level is enhanced.
In the present invention, fig. 3-1 is a schematic structural view of a composite floor, in which two opposite side ends of the composite floor are respectively provided with a flange a and a groove b capable of being fastened with the flange, that is, one side of the composite floor is provided with the flange a, and the opposite side of the composite floor is provided with the groove b fastened with the flange a; when the floor is paved, the flange a of the composite floor can be buckled in the groove b of the adjacent composite floor to form the locking structure shown in fig. 3-2. The dimensions of the flange a and the groove b are not particularly required by the present invention, and may be those well known to those skilled in the art. In the embodiment of the invention, the height of the flange a is consistent with the depth of the groove b, and the height of the flange a preferably accounts for 1/5-1/7 of the thickness of the composite floor. The invention preferably arranges the flanges and the grooves which can be buckled with the flanges at the two opposite side ends of the composite floor respectively, thereby simplifying the installation procedure of the composite floor and improving the installation speed.
In the invention, the thickness ratio of the wear-resistant layer, the artificial ore plate and the back pad is 1 (9-15): 2-5, and more preferably 1 (10-12): 3-4. In the invention, the total thickness of the composite floor is preferably 2-12 mm, and more preferably 5-10 mm. The invention preferably controls the total thickness of the composite floor within the range, can reduce the consumption of raw materials and the weight of the composite floor on the basis of not influencing the comprehensive performance of the composite floor, and is convenient for transportation and installation.
The composite floor provided by the invention has excellent dimensional stability, strength performance, wear resistance and flame retardance.
The performance measuring method of the composite floor is consistent with the measuring method of the artificial ore stone plate in the technical scheme, and the measurement is not repeated. The composite floor is kept stand at 80 ℃ for 6 hours, and then is naturally cooled for 6 hours to be used as a heating test condition so as to represent the size stability of the composite floor. In the invention, the length change rate of the composite floor after being heated is 0.02-0.10% of shrinkage, and the warpage of the composite floor after being heated is 0.225-0.413 mm.
The composite floor is soaked in water for 24 hours to serve as a waterproof performance test condition so as to represent the waterproof performance of the composite floor. In the invention, the length of the composite floor expands 0.02-0.05% after waterproof test; the thickness of the composite floor expands by 1.33-1.57%; the warping degree of the composite floor is 0.2625-0.425 mm.
The static bending strength of the composite floor is tested according to the ASTM 1037 standard, and the static bending strength of the composite floor is preferably 16.6-17.1 MPa.
The wear-resisting performance of the composite floor is tested according to NALFA 3.7 standard, and the wear-resisting revolution number of the composite floor is preferably 4800-5000 revolutions.
The present invention tests the composite floor for residual depressions according to the ASTM 1914 standard to characterize the recovery of the composite floor after being stressed. In the invention, the residual recess of the composite floor is preferably 0-0.03 mm.
The static load of the composite floor is tested according to the ASTM 970 standard so as to characterize the antistatic load capacity of the composite floor. In the invention, the static load of the composite floor is preferably 0.02-0.04 mm.
The flame retardant performance of the composite floor is tested by a plastic smoke density tester according to the test standard of ASTM E662. The smoke density of the composite floor is less than or equal to 28.
The invention also provides a preparation method of the composite floor board in the technical scheme, which comprises the following steps:
(a) the wear-resistant paper is stuck on the surface layer of the artificial ore stone slab, the balance paper is stuck on the bottom layer of the artificial ore stone slab, and a semi-finished product of the composite floor is obtained after hot pressing;
(b) and (b) sticking a back cushion on one side of the balance paper of the semi-finished product of the composite floor obtained in the step (a), and then carrying out cold pressing to obtain the composite floor.
The invention pastes wear-resistant paper on the surface layer of the artificial ore stone slab and pastes balance paper on the bottom layer of the artificial ore stone slab, and obtains a semi-finished product of the composite floor after hot pressing. The source of the wear-resistant paper is not particularly required by the invention, and the wear-resistant paper can be a commercially available product well known to those skilled in the art or a self-made product. In the embodiment of the invention, the wear-resistant paper is preferably a commercial product.
In the present invention, when the wear-resistant paper is prepared by itself, the method for preparing the wear-resistant paper preferably includes: and (3) impregnating the decorative paper with a mixture containing an adhesive and a wear-resistant material to obtain the wear-resistant paper. In the present invention, the adhesive preferably includes melamine resin; the wear-resistant material preferably comprises aluminum oxide; more preferably, it is alumina powder. In the invention, the particle size of the aluminum oxide powder is preferably 30-40 μm, and more preferably 32-36 μm. The invention has no special requirement on the mass ratio of the adhesive to the wear-resistant material, and the method is well known by the technical personnel in the field. The invention has no special requirements on the specific forming mode of the mixture, and the method is well known by the technical personnel in the field.
The invention has no special requirements on the source of the decorative paper, and can adopt commercial products well known in the technical field. The present invention does not require special embodiments of the impregnation, and may be carried out in a manner known to those skilled in the art.
In the present invention, the wear-resistant paper and the balance paper are preferably adhered to the surface layer and the bottom layer of the artificial ore plate, respectively, by an adhesive. The present invention does not require a particular source for the balancing paper and may be made from commercially available products well known to those skilled in the art.
In the invention, the chemical composition of the adhesive is consistent with that of the adhesive in the technical scheme, and is not repeated here. The amount of the adhesive used in the present invention is not particularly limited, and may be any amount known to those skilled in the art. The present invention has no special requirements for the specific implementation mode of the pasting, and the pasting mode known to those skilled in the art can be adopted.
After the bonding, the artificial ore plate with the surface layer and the bottom layer respectively bonded with the wear-resistant paper and the balance paper is subjected to hot pressing to obtain a semi-finished product of the composite floor. In the invention, the hot pressing temperature is preferably 100-190 ℃, more preferably 140-180 ℃, and more preferably 150-175 ℃; the hot pressing pressure is preferably 2-15 MPa, more preferably 3-13 MPa, and even more preferably 4-11 MPa; the hot pressing time is preferably 0.5-30 min, more preferably 0.5-25 min, and even more preferably 0.5-22 min. According to the invention, hot pressing is preferably carried out under the above conditions, so that the melamine resin in the wear-resistant paper can be cured, and the wear-resistant layer with better wear resistance is obtained.
After the composite floor semi-finished product is obtained, a back cushion is pasted on one side of the balance paper of the composite floor semi-finished product, and then cold pressing is carried out, so that the composite floor is obtained. The back pad of the present invention is the same as the back pad of the above technical solution, and is not repeated here. In the invention, the cold pressing temperature is preferably 15-30 ℃, and further preferably 20-25 ℃; the pressure of the cold pressing is preferably 10-15 MPa, and further preferably 12-14 MPa; the cold pressing time is preferably 60-120 min, and more preferably 70-110 min. The invention preferably carries out cold pressing under the conditions, so that the firmness of the back cushion and the artificial ore plate can be improved.
After cold pressing, the plate after cold pressing is preferably subjected to post-treatment to obtain the composite floor, so that the paving efficiency of the composite floor is improved. In the invention, the post-treatment means that flanges and grooves capable of being buckled with the flanges are arranged on two opposite sides of the cold-pressed plate. The invention has no special requirements on the arrangement mode of the flange and the groove so as to realize the control of the size.
In the invention, the performance of the composite floor prepared by the preparation method of the technical scheme is consistent with that of the composite floor of the technical scheme, and the performance is not repeated here.
The invention has no special requirements on the paving method of the composite floor, and can adopt a paving mode which is well known by the technical personnel in the field.
For further explanation of the present invention, the artificial ore board and the method for manufacturing the same, the composite floor and the method for manufacturing the same according to the present invention will be described in detail with reference to the accompanying drawings and examples, which should not be construed as limiting the scope of the present invention.
Example 1
Mixing 3 parts of modifier (the amount of the components of the modifier is shown in the table 2), 20 parts of wood chips, 60 parts of ore base material and 20 parts of water to obtain slurry, wherein the ore base material comprises 30 parts of magnesium oxide and 15 parts of magnesium chloride; laying a slurry layer in a mould, wherein the thickness of the layer is 4mm, then laying a layer of glass fiber mesh cloth, laying a layer of slurry, the thickness of the slurry is 3mm, standing and placing the slurry after laying, and demoulding to obtain an artificial ore plate blank; standing the primary blank, and polishing to obtain the artificial ore plate shown in figure 1; the size of the artificial ore plate is 2400mm multiplied by 3354mm multiplied by 5.00 mm;
respectively coating polyurethane adhesives on the upper surface and the lower surface of the artificial ore plate, respectively adhering wear-resistant paper and balance paper to the upper surface and the lower surface of the artificial ore plate (note: the upper surface and the lower surface are only used for distinguishing different surfaces and have no other special meanings), and then maintaining the pressure at 140 ℃ and 3MPa for 0.5-30 min to obtain a semi-finished product of the composite floor;
and then the back cushion is adhered to one side of the balance paper of the semi-finished composite floor, and the pressure is maintained for 70min at the temperature of 20 ℃ and under the pressure of 10MPa, so that the composite floor shown in the figure 2 is obtained. The size of the composite floor is 255.22mm multiplied by 161.93mm multiplied by 6.51 mm.
The grooves and the flanges described in fig. 3-1 are respectively formed at both opposite side ends of the composite floor panel, wherein the height of the flanges is identical to the depth of the grooves, and accounts for 1/6 of the thickness of the composite floor panel.
Example 2
The artificial ore plate and the composite floor were prepared according to the method of example 1, except that the ratio of each component was different from the preparation process, and the amounts of each component and the process parameters were listed in tables 1 to 3.
Example 3
The artificial ore plate and the composite floor were prepared according to the method of example 1, except that the ratio of each component was different from the preparation process, and the amounts of each component and the process parameters were listed in tables 1 to 3.
Example 4
The artificial ore plate and the composite floor were prepared according to the method of example 1, except that the ratio of each component was different from the preparation process, and the amounts of each component and the process parameters were listed in tables 1 to 3.
TABLE 1 quality of artificial ore stone used in examples 1 to 4 (parts by mass)
Examples Modifying agent Wood chip Magnesium oxide Magnesium chloride Water (W)
1 3 20 30 15 20
2 5 21 40 25 22
3 3.5 22 35 28 23
4 4 24 37 25 25
TABLE 2 amount (mass%) of modifier used in examples 1 to 4
Figure GDA0002972203130000121
Figure GDA0002972203130000131
TABLE 3 examples 1-4 composite floor preparation Process parameters
Figure GDA0002972203130000132
Testing the thermal expansion and cold contraction performance, the thermal shrinkage warping performance and the water soaking shrinkage warping performance of the artificial ore stone slabs and the composite floors obtained in the embodiments 1-4 according to the GB/T30435 and 2013 standard; wherein, the expansion with heat and contraction with cold performance is that the sample is placed for 24 hours under the conditions of 0 ℃, 25 ℃ and 40 ℃, then the length of the sample is measured, and the length change rate is calculated; the test of heating shrinkage warping degree is that the sample is placed in an oven with the temperature of 80 ℃ for 6h, naturally cooled for 6h, tested for the length and warping degree change rate, and tested by a test instrument BA-TA1000L type constant temperature and humidity tester; the water soaking shrinkage warping degree is that the sample is soaked in a water tank filled with tray water for 24 hours, the length change rate and the warping degree change rate are measured after the sample is wiped dry, and the test result is shown in table 4.
Table 4 examples 1-4 artificial ore plate performance test results
Figure GDA0002972203130000141
As can be seen from the test results in Table 4, after the artificial ore plate is subjected to the thermal expansion and cold contraction test within the temperature range of 0-40 ℃, the length change rate of the artificial ore plate provided by the invention is small, which indicates that the artificial ore plate has good dimensional stability within the temperature range of 0-40 ℃, and can be used in areas with different environmental temperatures.
After high temperature resistance and water soaking tests, the length and warpage change rates of the artificial ore plate are not large, which shows that the artificial ore plate provided by the invention has excellent high temperature resistance and waterproof performance.
Testing the heating shrinkage warping performance and the foam shrinkage warping performance of the composite floor with the size of 250mm multiplied by 160mm multiplied by 6mm obtained in the embodiment 1-4 according to the GB/T30435 and 2013 standard, wherein the testing conditions are the same as those of an artificial ore plate; the composite floor was tested for static bending strength, wear resistance, residual dishing, static load, and flame retardancy, and the test results are shown in table 5 and fig. 4.
Fig. 4 is a graph of the smoke density of the composite floor obtained in example 1 as a function of time, and it can be seen from the graph that the smoke density of the composite floor obtained in this example is the maximum when the smoke density is 7-8 min, but is only 27.89, and the smoke density is significantly reduced compared with the smoke density of a common floor which is less than 450.
TABLE 5 test results of the performance of the composite floor boards of examples 1 to 4
Figure GDA0002972203130000151
The test results in table 5 show that the composite floor provided by the invention not only has excellent high temperature resistance and waterproof performance, but also has better strength performance and wear resistance, the composite floor has better recovery performance after being stressed, and has flame retardance, thereby meeting the requirements of modern building decoration on the size, mechanics and flame retardance of the floor.
From the above embodiments, it can be seen that the artificial mineral stone slab and the composite floor provided by the invention can still maintain excellent dimensional stability under the conditions of high temperature and water, the adaptability of the composite floor to the environment is improved, and the application range of the composite floor is further expanded.
In addition, the composite floor provided by the invention has low relative density, and is beneficial to the transportation and installation of the composite floor; the composite floor provided by the invention has the advantages that the flanges and the grooves are easy to pave, so that the paving efficiency and the firmness of connection between the composite floors are greatly improved; the preparation method of the artificial ore plate and the composite floor provided by the invention is simple and convenient, and is easy for large-scale popularization.
Although the present invention has been described in detail with reference to the above embodiments, it is only a part of the embodiments of the present invention, not all of the embodiments, and other embodiments can be obtained without inventive step according to the embodiments, and the embodiments are within the scope of the present invention.

Claims (9)

1. An artificial ore plate comprises modified ore layers and glass fiber gridding cloth layers which are alternately laminated; the bottom layer and the surface layer of the artificial ore plate are modified ore layers;
the modified ore layer is prepared from the following raw materials in parts by mass: 60-80 parts of ore base material, 20-24 parts of sawdust, 3-5 parts of modifier and 20-25 parts of water; the ore base material is magnesium oxide and magnesium chloride;
the modifier is sodium methylene dinaphthalene sulfonate, ferrous sulfate, oxalic acid, trisodium phosphate, sodium methyl nitrate, dibutyl phthalate, phenol, xylene, toluene, ethylenediamine, sulfuric acid, sodium hexametaphosphate, sodium nitrite, methyl cellulose, formaldehyde, xerophthalein, gelatin, sodium pentachlorophenate, sodium fluosilicate, water glass and water;
the modifier comprises the following components in percentage by mass: 2-2.5% of sodium methylene dinaphthalene sulfonate, 9-12% of ferrous sulfate, 12-15% of oxalic acid, 0.5-0.8% of trisodium phosphate, 0.5-1.0% of sodium methyl nitrate, 0.3-0.5% of dibutyl phthalate, 0.7-1.0% of phenol, 0.6-1.0% of xylene, 0.6-1.0% of toluene, 0.5-0.7% of ethylenediamine, 5-8% of sulfuric acid, 1.0-1.2% of sodium hexametaphosphate, 0.5-0.7% of sodium nitrite, 1.8-2.5% of methyl cellulose, 0.8-1.5% of formaldehyde, 0.8-1.5% of xerophthalein, 7-8% of gelatin, 0.01-0.05% of sodium pentachlorophenate, 0.01-0.5% of sodium fluosilicate, 0.5-1.0% of water and the balance of water.
2. The artificial ore plate of claim 1, wherein the wood chips comprise straw chips.
3. The artificial ore plate of claim 1, wherein the total thickness of the artificial ore plate is 1 to 10 mm.
4. A method for producing an artificial ore plate according to any one of claims 1 to 3, comprising the steps of:
(1) mixing the raw materials of the modified ore layer, and carrying out modification reaction to obtain modified ore slurry;
(2) laying the modified ore slurry obtained in the step (1) and the glass fiber mesh cloth in a mould in an alternating layer mode, and then sequentially carrying out curing and demoulding to obtain an artificial ore plate blank comprising a modified ore layer and a glass fiber mesh cloth layer; the bottom layer and the surface layer of the artificial ore plate primary blank are modified ore layers;
(3) sequentially maintaining and sanding the artificial ore plate primary blank obtained in the step (2) to obtain an artificial ore plate;
the modifier comprises the following components in percentage by mass: 2-2.5% of sodium methylene dinaphthalene sulfonate, 9-12% of ferrous sulfate, 12-15% of oxalic acid, 0.5-0.8% of trisodium phosphate, 0.5-1.0% of sodium methyl nitrate, 0.3-0.5% of dibutyl phthalate, 0.7-1.0% of phenol, 0.6-1.0% of xylene, 0.6-1.0% of toluene, 0.5-0.7% of ethylenediamine, 5-8% of sulfuric acid, 1.0-1.2% of sodium hexametaphosphate, 0.5-0.7% of sodium nitrite, 1.8-2.5% of methyl cellulose, 0.8-1.5% of formaldehyde, 0.8-1.5% of xerophthalein, 7-8% of gelatin, 0.01-0.05% of sodium pentachlorophenate, 0.01-0.5% of sodium fluosilicate, 0.5-1.0% of water and the balance of water.
5. A composite floor board comprising, in order, a bonded wear-resistant layer, an artificial mineral board and a back pad, wherein the artificial mineral board is the artificial mineral board according to any one of claims 1 to 3 or the artificial mineral board produced by the production method according to claim 4.
6. The composite floor of claim 5, wherein the composite floor has a thickness of 2 to 12 mm.
7. The composite floor of claim 5 or 6, wherein both opposite side ends of the composite floor are respectively provided with a flange and a groove capable of being engaged with the flange.
8. A method for preparing the composite floor as claimed in any one of claims 5 to 7, comprising the steps of:
(a) the wear-resistant paper is stuck on the surface layer of the artificial ore stone slab, the balance paper is stuck on the bottom layer of the artificial ore stone slab, and a semi-finished product of the composite floor is obtained after hot pressing;
(b) and (b) sticking a back cushion on one side of the balance paper of the semi-finished product of the composite floor obtained in the step (a), and then carrying out cold pressing to obtain the composite floor.
9. The method according to claim 8, wherein the temperature of the hot pressing in the step (a) is 100 to 190 ℃; the hot pressing pressure is 2-15 MPa; the hot pressing time is 0.5-30 min.
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